53results about How to "Good automatic control" patented technology

The invention discloses an automatic down filling machine, and belongs to the technical filed of a stowage unit for down and feather filled products. The automatic down filling machine comprises a box body, a first down stirring mechanism, a second down stirring mechanism, an electrical automatic control mechanism, a pair of weighing metering mechanisms, a pair of down output mechanisms, a pair of down filling heads and a box cavity channel start-and-stop mechanism. The box body comprises a box frame, a down storage box and a down delivering box. The first down stirring mechanism is used for stirring down in a down storage box cavity, and the second down stirring mechanism is used for stirring down in a down delivering box cavity. The pair of weighing metering mechanisms is connected with a pair of down leading out connector pipelines on two sides of the down delivering box, the pair of down output mechanisms is connected with the pair of weighing metering mechanisms, the pair of down filling heads is connected with the pair of down output mechanisms in a matched mode, and the box cavity channel start-and-stop mechanism is placed on the box frame. The electrical automatic control mechanism is provided with an electrical box body, a control panel, a programmable controller, a group of magnetic valves and a high-pressure air storage tank. The automatic down filling machine has the advantages of showing rhythmic continuity of down supplying, being capable of providing guarantee for subsequent continuously weighing and down filling, showing good down filling efficiency, reducing operation intensity of workers, eradicating down wasting and showing good automatic control effect.

The invention discloses a system for testing comprehensive performance of a metal roof. The system comprises an upper tank body (1), a lower tank body (2), a sealing piece (18), a support (21), a first air supply / exhaust device, a pump (6), a shower pipe (60), a shower nozzle (61), a refrigerator (7), a refrigerating pipe (71), an electric control device (9), a hanging rod (11), a displacement sensor (12), an electric heater (13), a net rack (14), a temperature / humidity sensor (15), and a wind pressure sensor (91), wherein a closed space is formed by the upper tank body (1) and a metal roof testing piece (8); a closed space is formed by the lower tank body (2) and the metal roof testing piece (8); the first air supply / exhaust device comprises a first fan (3) and a reversing valve (5); a reversing device is arranged in the valve body of the reversing valve (5); when the reversing device is in a first reversing state, the first fan (3) exhausts air from the upper tank body (1); and when the reversing device is in a second reversing state, the first fan (3) supplies air to the upper tank body. The system for testing the comprehensive performance of the metal roof can be widely applied to the field of test of metal roofs.

The invention provides an automatic temperature control platinum wire electronic cigarette, which is characterized by comprising an atomization wire, a sampling circuit, a singlechip microcomputer and a power adjustment circuit, wherein a resistance value of the atomization wire varies positively along with a temperature value, the atomization wire is a platinum wire, the sampling circuit is connected with the atomization wire in series, the singlechip microcomputer is connected with the output end of the sampling circuit and capable of processing analog signals outputted by the sampling circuit, the power adjustment circuit is connected with the singlechip microcomputer and controlled by the singlechip microcomputer, and the output end of the power adjustment circuit is connected with the sampling circuit. According to the invention, the platinum-wire atomization wire with a high oxidation resistance and a high temperature coefficient of resistance is adopted, a real-time current value at both ends of the atomization wire can be acquired more accurately when the temperature of the atomization wire changes in the long-time using process, the real-time current value is converted into a real-time temperature value through conversion, acquisition, amplification and processing, the singlechip microcomputer controls and adjusts the power loaded on the atomization wire through a result of comparing the real-time temperature value and a preset temperature value, thus the temperature of the atomization wire is adjusted, and heat preservation is carried out after the preset temperature is reached. The automatic temperature control platinum wire electronic cigarette has function of automatic detection, temperature control and constant temperature.

The invention relates to a drill rod straight automatic detection and straightening integral controlling system, belonging to automatic control technical field. The inventive system comprises a signal collecting and processing module, a process control module, a man-machine interface module and an action logic control module, wherein the signal collecting and processing module obtains and processes information and transmits the processed information to the process control module, the process control module converts the information sent from the signal collecting and processing module into process control information to be sent to the action logic control module and the man-machine interface module, the man-machine interface module provides an interaction platform between operator and system, via which operator can adjust the process parameters of the process control module, the action logic control module controls the action of executors and uses the man-machine interface module to real-time display the action state of system or operate system action via the man-machine interface module. The invention serially connects checking and straightening to realize the accurate, reliable and effective automatic control on each sub system.

The invention provides a multifunctional experiment device and method for deposition of a zinc alloy coating; a vapor plating component, a magnetron sputtering component and heating components are integratedly arranged in the multifunctional experiment device; the vapor plating component is arranged on one side of the bottom of a plating chamber, the magnetron sputtering component is arranged on two side walls of the plating chamber, the heating components are arranged on the upper part of one side of the inner wall of the plating chamber; through use of the multifunctional experiment device, deposition of the alloy coating on the steel substrate surface can be realized through vapor plating and annealing or through magnetron sputtering and annealing on the same device; through use of the multifunctional experiment device, the common functions of multiple functional-components are tactfully shared in the same device, and unique functions of each functional component are respectively used; through use of the multifunctional experiment device, vacuum vapor plating + annealing or magnetron sputtering + annealing can be continuously carried out under vacuum conditions, a hidden trouble that product defects may generate in a discontinuous production process can be eliminated, and the quality and performance of an alloy coating product can be ensured; and the multifunctional experiment device has the advantages compact structure and complete functions and is material-saving and energy-saving.

The invention discloses a metal building element dynamic wind load simulation test device. The simulation test device comprises an upper box body(1), a lower box body(2), a seal element (3), a fan (4), a reversal valve(5), a flutter valve (6), a regulating valve (7) and a control device, wherein a reversing device (500) is arranged in the reversal valve(5), the reversal valve(5) comprises a valve air inlet, a valve air outlet, a first valve air inlet and air outlet and a second valve air inlet and air outlet, the air outlet of the fan (4) is communicated with the valve air inlet, the air outlet thereof is communicated with the valve air outlet, the second valve air inlet and air outlet are communicated with the upper box body(1), when the reversing device (500) is in a first reversing state, the valve air inlet is communicated with the first valve air inlet and air outlet and the valve air outlet is communicated with the second valve air inlet and air outlet; and when the reversing device (500) is in a second reversing state, the valve air inlet is communicated with the second valve air inlet and air outlet and the valve air outlet is communicated with the first valve air inlet and air outlet. The simulation test device of the invention can be used in the detection field of metal curtain walls and roofs.

The invention relates to a voltage reactive control approach of transformer substation, which comprises a RTU, an optical fiber channel or an electric carrier line connected with the RTU and a local control system, the transformer, a electronic computer connected with the local control system, a transformer and a capacitor. The invention is characterized in that, with the adoption of a eleven area diagram control approach, the collected real-time voltage and real-time reactive power are compared with a voltage limiting value and a reactive limiting value to confirm the position of the current system at the eleven area diagram. If a switched capacitor group or a transformer-conditioning shift is confirmed to meet the control requirement according to the control approach, then the switched capacitor group or transformer-conditioning shift will carry out the transformer shift conditioning or the switching-in and switching-out of the capacitor to control the transformer or the capacitor group. The invention can effectively lower the consumption of the prior equipment with good automatic control effect, promote the voltage qualified rate, eliminate the working intense of the personnel and is suitable for installation use in the transformer substation.

The invention discloses an automatic down filling machine, and belongs to the technical filed of a stowage unit for down and feather filled products. The automatic down filling machine comprises a box body, a first down stirring mechanism, a second down stirring mechanism, an electrical automatic control mechanism, a pair of weighing metering mechanisms, a pair of down output mechanisms, a pair of down filling heads and a box cavity channel start-and-stop mechanism. The box body comprises a box frame, a down storage box and a down delivering box. The first down stirring mechanism is used for stirring down in a down storage box cavity, and the second down stirring mechanism is used for stirring down in a down delivering box cavity. The pair of weighing metering mechanisms is connected with a pair of down leading out connector pipelines on two sides of the down delivering box, the pair of down output mechanisms is connected with the pair of weighing metering mechanisms, the pair of down filling heads is connected with the pair of down output mechanisms in a matched mode, and the box cavity channel start-and-stop mechanism is placed on the box frame. The electrical automatic control mechanism is provided with an electrical box body, a control panel, a programmable controller, a group of magnetic valves and a high-pressure air storage tank. The automatic down filling machine has the advantages of showing rhythmic continuity of down supplying, being capable of providing guarantee for subsequent continuously weighing and down filling, showing good down filling efficiency, reducing operation intensity of workers, eradicating down wasting and showing good automatic control effect.

The invention discloses a feed oil adding device. The feed oil adding device comprises an oil pump, an oil storage tank, a thick oil drain pipe, a thin oil drain pipe, a first solenoid valve, a second solenoid valve, a weighing hopper, a buffer head, an oiling pump, a mixer, a timeout controller, a weighing sensor, a third solenoid valve, a pressure sensor and and an external control center; an oil inlet of the oil storage tank is connected with the oil pump through a pipeline, the oil storage tank is communicated with the weighing hopper through the thick oil drain pipe and the thin oil drain pipe, and the thick oil drain pipe and the thin oil drain pipe are provided with the first solenoid valve and the second solenoid valve respectively. The feed oil adding device is scientific and reasonable in structure, safe and reliable in operation, good in automatic control and good in practicability.

A thermal washing machine for storage tanks, in which the cleaning spindle drives the upper flat air pipe, the lower flat air pipe, the upper left vertical pipe, the upper right vertical pipe, the lower left vertical pipe, and the lower right vertical pipe to move up and down or rotate in situ to clean the cleaning liquid. Stirring, at the same time, large pores, medium pores, and small pores spray high-temperature gas outward in the state of rotation, which has the functions of stirring enhancement and providing heat source. The upper connecting seat and the lower connecting seat provide the firmness of the connection, and the lower connecting seat The temperature measuring sensor set on the top monitors the temperature in the material storage tank. This design not only has a wider cleaning area, greater cleaning force, and better cleaning effect, but also has strong adjustability, high stability, and good heating effect.

The invention discloses a negative ion LED illuminating device. The negative ion LED illuminating device comprises a lamp shade, a rear casing, an illuminating lamp component, connecting leads, an electric control device, a first negative ion generation device, a second negative ion generation device and the like. The negative ion LED illuminating device provided by the invention has technical improvements on multiple aspects; and multiple creative technical schemes and structures are designed, and the technical improvements on the multiple aspects are obtained at the same time, so that good market prospect and economic benefits are surely brought.

A cleaning device for a construction powder storage device, in which the upper and lower drive shafts drive the upper and lower disc units to move up and down or rotate on the spot, so as to drive the disc body and the stirring hook to move up and down or rotate, so as to The cleaning liquid is stirred, and at the same time, the heating frame and the heater provide the heat source, the upper connecting seat and the lower connecting seat provide the firmness of the connection, and the temperature measuring sensor installed on the lower connecting seat monitors the temperature in the storage tank, The temperature sensor includes a metal shell, an input power cord, an output power cord, a power supply sheet, a left temperature sensing sheet, and a right temperature sensing sheet. This design not only has a wider cleaning area, greater cleaning force, and better cleaning effect, but also has strong adjustability, high stability, and good heating effect.

The method comprises the following steps: acquiring operation data of a PVC drying system, preprocessing the acquired historical data, sequencing and re-sampling to obtain an operation parameter matrix, recombining the drying operation parameter matrix according to a data format requirement of an LSTM model to obtain a sample set, and randomly selecting samples with a sample size of 80% in the sample set as a training data set and the rest 20% as a verification data set; taking the training data set and the verification data set as input to construct an initial PVC moisture content prediction model based on the LSTM deep recurrent neural network; optimizing the hyper-parameters in the PVC moisture content prediction model based on the LSTM deep recurrent neural network, wherein the optimized hyper-parameters serve as control variables, and training the PVC moisture content prediction model based on the LSTM deep recurrent neural network to obtain a PVC moisture dynamic prediction model; and inputting real-time operation data of the PVC drying system to obtain a PVC moisture content predicted value.

The invention provides an automatic temperature control platinum wire electronic cigarette, which is characterized by comprising an atomization wire, a sampling circuit, a singlechip microcomputer and a power adjustment circuit, wherein a resistance value of the atomization wire varies positively along with a temperature value, the atomization wire is a platinum wire, the sampling circuit is connected with the atomization wire in series, the singlechip microcomputer is connected with the output end of the sampling circuit and capable of processing analog signals outputted by the sampling circuit, the power adjustment circuit is connected with the singlechip microcomputer and controlled by the singlechip microcomputer, and the output end of the power adjustment circuit is connected with the sampling circuit. According to the invention, the platinum-wire atomization wire with a high oxidation resistance and a high temperature coefficient of resistance is adopted, a real-time current value at both ends of the atomization wire can be acquired more accurately when the temperature of the atomization wire changes in the long-time using process, the real-time current value is converted into a real-time temperature value through conversion, acquisition, amplification and processing, the singlechip microcomputer controls and adjusts the power loaded on the atomization wire through a result of comparing the real-time temperature value and a preset temperature value, thus the temperature of the atomization wire is adjusted, and heat preservation is carried out after the preset temperature is reached. The automatic temperature control platinum wire electronic cigarette has function of automatic detection, temperature control and constant temperature.

The invention discloses a pipeline fueling vehicle. By additionally arranging a shuttle valve and a second two-position three-way valve, when oil continuously enters an oil return tank to reach a highliquid level and a pneumatic control pressure control valve is not effectively closed, an effective sound-light alarm is given out, and the pneumatic control pressure control valve can be automatically cut off and closed. Compared with the prior art, modification is little, and the automatic cut-off closing function can be achieved only by additionally arranging the second shuttle valve and the second two-position three-way valve. And the high-liquid-level sound-light alarm lamp is arranged on the oil return tank, when the liquid level in the oil return tank reaches the high liquid level, anoiling person can be reminded through sound, and compared with an original light alarm lamp, the reminding effect is stronger, and the effect is better.

The invention discloses an automatic weighing charging machine. The automatic weighing charging machine comprises a feed hopper. A weighing sensor is arranged on the side face of the feed hopper. A spiral feed device is arranged above the feed hopper. A small-amount feed layer board device is arranged below the outlet position of the spiral feed device. The small-amount feed layer board device is arranged on a base. The base is movably arranged below the spiral feed device. The small-amount feed layer board device comprises an obliquely-arranged layer board, the layer board is connected to an installation shaft, the installation shaft is driven by a vibrating device to vibrate leftwards and rightwards, the vibrating device is arranged on the base, a small hopper is arranged above the layer board, an extensible and retractable baffle is arranged at the outlet position of the small hopper, and the baffle is perpendicular to the layer board. The automatic weighing charging machine is reasonable in structure set and smooth in running, interference does not occur, the small-amount feed layer board device moves to the position below the spiral feed device at the later feed period of the spiral feed device, small-amount supplementation feed is carried out, and the problems that the feed flow is too large and consequently feed is too much or too small is solved.

The invention discloses detection equipment for an automatic lathe and a using method of the detection equipment. The detection equipment comprises a device top plate, one end of the device top plate is fixedly connected with a first mounting column, the other end of the device top plate is fixedly connected with a second mounting column, a first positioning support is fixedly mounted at the lower end of the first mounting column, a second positioning support is fixedly mounted at the lower end of the second mounting column, and a controller is mounted on the outer side of the second mounting column. According to the detection equipment for the automatic lathe and the using method of the detection equipment, a movable mounting base, a multifunctional detection mechanism, an illumination mechanism and a central control module are arranged, the position of the device can be conveniently and better adjusted, the device can move, the detection range is enlarged, the temperature and working condition of the lathe and the position of a moving part can be conveniently monitored, illumination can be conveniently carried out on the working of the lathe, central management is facilitated, the automatic control effect is more excellent, and better use prospects are brought.

The invention discloses an overhead feeding device for a crane. The overhead feeding device comprises a rack of the crane, a feeding tank, brackets, driving mechanisms and a control system, wherein two mutually parallel brackets are arranged on the rack, one ends of the brackets are fixedly arranged on a supporting frame, walking wheels at the bottom of the supporting frame are arranged in a rail groove of the rack, the feeding tank is arranged between the two brackets, the driving mechanisms drive the supporting frame to horizontally reciprocate on the rack, a material collection box and a dust collection box are arranged above the feeding tank, a circular feed opening and a dust overflow opening are arranged on the material collection box, the dust overflow opening is hermetically connected with the inlet of the dust collection box through a pipeline, a conical material distribution block is arranged in the box body of the material collection box, the pointed part of the material distribution block corresponds to the circle centre of the feed opening, a plurality of discharge openings are arranged at positions located at the bottom of the material collection box at the circumference of the material distribution block, and the discharge openings are hermetically connected with the inlet of the feeding tank through material guide pipes; and the device is good in automatic control performance, high in utilization rate and small in environmental pollution during the application process.

The invention discloses a feed oil adding device. The feed oil adding device comprises an oil pump, an oil storage tank, a thick oil drain pipe, a thin oil drain pipe, a first solenoid valve, a second solenoid valve, a weighing hopper, a buffer head, an oiling pump, a mixer, a timeout controller, a weighing sensor, a third solenoid valve, a pressure sensor and and an external control center; an oil inlet of the oil storage tank is connected with the oil pump through a pipeline, the oil storage tank is communicated with the weighing hopper through the thick oil drain pipe and the thin oil drain pipe, and the thick oil drain pipe and the thin oil drain pipe are provided with the first solenoid valve and the second solenoid valve respectively. The feed oil adding device is scientific and reasonable in structure, safe and reliable in operation, good in automatic control and good in practicability.

The invention discloses an instrument adopting medication steam for medical treatment. The instrument comprises a big-end-up squatting portion and a big-end-down mixing portion, a mixing unit in the mixing portion is driven to rotate through a driving spindle to have the medication steam and liquid stirred, a heating unit in the side wall of the mixing portion provides heat, temperature in the mixing portion is monitored through a temperature detection sensor in the bottom wall of the mixing portion, and the temperature detection sensor comprises a metal shell, an input wire, an input conductive piece, an output wire, an output conductive block, a plastic strip and a wax block. By the arrangement, uniformity in concentration of the medication steam can be improved, medical treatment effectis improved, and high adjustability and good automatic control are achieved.

The invention discloses a simple pig house drinking water device, comprising an upper water collection tank, a small disinfection water tank, an automatic valve, a first diversion pipe and a lower water tank, the upper water collection tank is connected to an external tap water pipe, and the small disinfection water tank is placed The lower part of the upper water collection tank and the upper water collection tank are provided with a second guide pipe, the first guide pipe is connected between the small disinfection water tank and the lower water tank, the lower water tank is placed in the pig house, and the lower water tank is placed A liquid level sensor is arranged in the water tank, and the liquid level sensor is electrically connected to a comprehensive control box for controlling the opening and closing of the automatic valve. The simple pig house drinking device not only effectively realizes the automatic water intake in the water tank to ensure the normal drinking water of the pigs, but also has good automatic control effect and sensitive response. In addition, it can also effectively ensure the cleanliness of drinking water and avoid water quality problems that will affect the pigs normal growth and development.

The invention discloses a metal building element dynamic wind load simulation test device. The simulation test device comprises an upper box body(1), a lower box body(2), a seal element (3), a fan (4), a reversal valve(5), a flutter valve (6), a regulating valve (7) and a control device, wherein a reversing device (500) is arranged in the reversal valve(5), the reversal valve(5) comprises a valveair inlet, a valve air outlet, a first valve air inlet and air outlet and a second valve air inlet and air outlet, the air outlet of the fan (4) is communicated with the valve air inlet, the air outlet thereof is communicated with the valve air outlet, the second valve air inlet and air outlet are communicated with the upper box body(1), when the reversing device (500) is in a first reversing state, the valve air inlet is communicated with the first valve air inlet and air outlet and the valve air outlet is communicated with the second valve air inlet and air outlet; and when the reversing device (500) is in a second reversing state, the valve air inlet is communicated with the second valve air inlet and air outlet and the valve air outlet is communicated with the first valve air inlet and air outlet. The simulation test device of the invention can be used in the detection field of metal curtain walls and roofs.

The invention provides an accuracy-variable magnetic railing ruler based on array nozzle electro-spinning direct writing and a device and method for manufacturing the accuracy-variable magnetic railing ruler. For the accuracy-variable magnetic railing ruler based on array nozzle electro-spinning direct writing, non-magnetism-conducting polymer fibers which are regularly arrayed are firstly and directly written through the array nozzle electro-spinning direct writing technology,and therefore a non-magnetism-conducting thin film is formed to serve as a substrate; then, the polymer fibers which are regularly arrayed and mixed with hard magnetic material particles are directly written, so that a thin film which is of a structure regularly and evenly distributed and is provided with a magnetic surface is formed to serve as a magnetic ruler, magnetic waves are recorded on the magnetic thin film through a magnetism recording head, and therefore the magnetic railing ruler is manufactured. The accuracy of the magnetic railing ruler can be changed when the magnetic railing ruler is installed and measured according to the requirement for the measured accuracy. Due to the fact that the polymer electro-spinning thin film is strong in adsorption performance, the accuracy-variable magnetic railing ruler based on electro-spinning direct writing can be adsorbed to a measured workpiece, can be synchronously expanded or contracted along with the measured workpiece and is strong in adaptability to the change of the environment. According to the array nozzle electro-spinning direct writing technology, a plurality of electro-spinning depositions can be directly written with high accuracy, and the production efficiency is high on the premise that the production accuracy is guaranteed.

Disclosed is a medicine evaporation method disease treating instrument. An upper main shaft and a lower main shaft inside the instrument drive a left arc pipe, an upper flat pipe, a right arc pipe, alower flat pipe, an inner sub-body and stirring blades to rotate so as to stir disinfecting materials, and therefore the medicine steam and liquid medicine concentration uniform can be improved; airflow ejected through inner and outer vent holes can form vortex so as to enhance the stirring function, and the stirring blades can be driven by rotating strength and the airflow ejected through the vent holes so as to swing around a rotating shaft, a heating device inside the side wall of a liquid medicine bin provides heat, and a temperature measuring sensor inside the bottom wall of the liquid medicine bin monitors the temperature inside the liquid medicine bin. Due to the design, the medicine steam concentration uniformity can be improved, the treatment effect is improved, the adjustabilityis high, and the automatic controllability is good.

A fumigation type gynecological medical device comprises a T-shaped outer frame, an inner heater, a short stirring shaft, a long stirring shaft, an upper rotating shaft, a lower rotating shaft and a steam generation chamber, wherein the T-shaped outer frame, the inner heater, the short stirring shaft and the long stirring shaft in the steam generation chamber are driven by the upper rotating shaftand the lower rotating shaft to stir medicine steam and liquid medicine, so that the concentration uniformity of the medicine steam and the liquid medicine is improved. The internal heater and the heating device in the side wall of the steam generation chamber are used for heating together, the heating uniformity is improved, the temperature in the steam generation chamber is monitored by the temperature sensor in the bottom wall of the steam generation chamber, the temperature sensor comprises a metal shell, an input power line, an output power line, an electrifying block, a left wax block,a right wax block and an insulating platform. In addition, short medicine outlet holes and long medicine outlet holes can achieve on-line medicine supplement, and the concentration of liquid medicineis ensured. By adopting the design, the uniformity of the medicine vapor concentration can be improved, the medical effect can be enhanced, the medicine can be supplemented on line, and the adjustability is high.

The invention belongs to the technical field of electric vehicle production, and particularly relates to a dead-corner-free electrophoresis hanger for a hub of an electric vehicle. The hanger comprises a hanging mechanism, a rotating mechanism, a bouncing mechanism and a linkage mechanism, wherein the hanging mechanism comprises a hanging rod used for hanging hub electrophoresis and a hanging ring connected to the hanging rod and used for being connected with the hanging tool; and the rotating mechanism comprises an electric push rod installed on the hanging rod, a movable plate connected with the electric push rod and located in the hanging rod, and a suspending rod transversely connected to the hanging rod and used for suspending the hub. Through the rotating mechanism, the electric push rod can be used for driving a movable plate to move up and down in a reciprocating mode, then a gear shaft drives the suspending rod to rotate, the hub placed on the suspending rod can be kept in a non-static state, the contact position of the rotating mechanism and the hub is of a net-shaped structure, the contact area between the suspending tool and the hub is effectively reduced, dead-corner-free electrophoresis hanger is realized, and the device is novel and reasonable in structural design and convenient to popularize and use.

The invention provides an accuracy-variable magnetic railing ruler based on array nozzle electro-spinning direct writing and a device and method for manufacturing the accuracy-variable magnetic railing ruler. For the accuracy-variable magnetic railing ruler based on array nozzle electro-spinning direct writing, non-magnetism-conducting polymer fibers which are regularly arrayed are firstly and directly written through the array nozzle electro-spinning direct writing technology,and therefore a non-magnetism-conducting thin film is formed to serve as a substrate; then, the polymer fibers which are regularly arrayed and mixed with hard magnetic material particles are directly written, so that a thin film which is of a structure regularly and evenly distributed and is provided with a magnetic surface is formed to serve as a magnetic ruler, magnetic waves are recorded on the magnetic thin film through a magnetism recording head, and therefore the magnetic railing ruler is manufactured. The accuracy of the magnetic railing ruler can be changed when the magnetic railing ruler is installed and measured according to the requirement for the measured accuracy. Due to the fact that the polymer electro-spinning thin film is strong in adsorption performance, the accuracy-variable magnetic railing ruler based on electro-spinning direct writing can be adsorbed to a measured workpiece, can be synchronously expanded or contracted along with the measured workpiece and is strong in adaptability to the change of the environment. According to the array nozzle electro-spinning direct writing technology, a plurality of electro-spinning depositions can be directly written with high accuracy, and the production efficiency is high on the premise that the production accuracy is guaranteed.